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Liu S, Li H, Zhu Z, Wu M, Jin M, Wang X, Hou J, Li D, Wang R. A bacteriophage against Citrobacter braakii and its synergistic effect with antibiotics. Arch Microbiol 2024; 206:74. [PMID: 38253939 DOI: 10.1007/s00203-023-03803-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 12/06/2023] [Accepted: 12/17/2023] [Indexed: 01/24/2024]
Abstract
A bacteriophage BD49 specific for Citrobacter braakii was screened out and purified by double-layer plate method. It consists of a polyhedral head of 93.1 ± 1.2 nm long and 72.9 ± 4.2 nm wide, tail fibers, collar, sheath and baseplate. The bacteriophage was identified by morphology observed with transmission electron microscope (TEM), whole genome sequencing carried out by Illumina next generation sequencing (NGS) technique, and gene annotation based on Clusters of Orthologous Groups of proteins (COG) database. It was identified primarily as a member of Caudovirales by morphology and further determined as Caudovirales, Myoviridae, and Citrobacter bacteriophage by alignment of its whole genome sequence with the NCBI database and establishment of phylogenetic tree. The bacteriophage showed good environmental suitability with optimal multiplicity of infection (MOI) of 0.01, proliferation time of 80 min, optimum living temperature of 30-40 °C, and living pH of 5-10. In addition, it exhibited synergistic effect with ciprofloxacin against C. braakii in antibacterial tests.
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Affiliation(s)
- Siqi Liu
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang University Town, Yangguang South Street, Fangshan District, Beijing, 102488, China
| | - Hanyi Li
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang University Town, Yangguang South Street, Fangshan District, Beijing, 102488, China
| | - Zhihao Zhu
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang University Town, Yangguang South Street, Fangshan District, Beijing, 102488, China
| | - Mengjiao Wu
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang University Town, Yangguang South Street, Fangshan District, Beijing, 102488, China
| | - Mingxuan Jin
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang University Town, Yangguang South Street, Fangshan District, Beijing, 102488, China
| | - Xiangxiang Wang
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang University Town, Yangguang South Street, Fangshan District, Beijing, 102488, China
| | - Jincai Hou
- Hebei Shineway Pharmaceutical Co., Ltd, Yingbin Street, Langfang, 065201, Hebei, China.
| | - Dan Li
- Hebei Shineway Pharmaceutical Co., Ltd, Yingbin Street, Langfang, 065201, Hebei, China.
| | - Rufeng Wang
- School of Life Sciences, Beijing University of Chinese Medicine, Liangxiang University Town, Yangguang South Street, Fangshan District, Beijing, 102488, China.
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